<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    p{
        color: green;
    }
    h2{
        color: pink;
    }
    
</style>
<body>
    <P>hello</P>
    <H2>world</H2>
    <div class="an">
        <input type="button" value="submit"> 
    </div>
    <div class="wx">
        <ul>
            <li  class="shu" style="background-color: blueviolet;">1</li>
             <li class="shu" style="background-color: blueviolet;">2</li>
              <li class="shu"  style="background-color: blueviolet;">3</li>
        </ul>
    </div>
</body>
</html>